Machine translation of the Portuguese Wikipedia article (November 2026 version).
Rio Grande is a Brazilian municipality on the southern coast of the state of Rio Grande do Sul. According to the 2022 Census, it has an estimated population of 191,900 inhabitants and, in 2021, it had the 4th largest GDP among the municipalities of Rio Grande do Sul. Located in the Pampa biome, it lies at the far south of the state of Rio Grande do Sul, between Mirim Lagoon, Patos Lagoon (the largest lagoon in Brazil) and the Atlantic Ocean. Founded in 1737, it is the oldest municipality in Rio Grande do Sul.
The city built its wealth over the course of its history thanks to strong industrial activity. The Port of Rio Grande is the fourth largest in cargo handling in Brazil, and the municipality is home to the Riograndense Petroleum Refinery, inaugurated in 1937 as the “Ipiranga Refinery”, the first built in Brazil, which today is capable of processing 17,000 barrels of oil per day. As for the HDI, in 2010 Rio Grande ranked 131st among the municipalities of Rio Grande do Sul and 667th in Brazil.
The city of Rio Grande was founded by Brigadier José da Silva Paes in 1737, as the Jesus-Maria-José fort, becoming the village of Rio Grande de São Pedro in 1751 and the city of Rio Grande on June 27, 1835, serving then as the imperial capital of the Province of São Pedro do Rio Grande do Sul in the midst of the newly begun Farroupilha Revolution.
The municipality, together with Arroio do Padre, Capão do Leão, Pelotas and São José do Norte, makes up one of the three urban agglomerations of Rio Grande do Sul, and it is classified as a sub-regional center level 1.
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